KR20140089038A - Method and system of power demand management in charging station for electric vehicle - Google Patents

Abstract

The present invention relates to a power demand management method for an electric vehicle charging station and a power demand management system for an electric vehicle charging station for providing the same, the target electric power usage amount setting step of setting a target electric power consumption amount of an electric vehicle charging station according to a demand reaction event participation; A charge power usage determination step of determining whether to adjust a charge power usage amount by comparing the real time charge power usage amount of the electric vehicle charging station with the target electric power usage amount; A charge level setting step of setting a plurality of charge levels in which the charge time and the charge amount per unit time are different for the electric vehicle and calculating a charge unit price for each charge level based on the profit through the demand response event; And a charge information providing step of providing the user with the charge unit price of the charge level to induce the adjustment of the charge electric power consumption amount of the electric vehicle charge station. The electric power demand management method of an electric vehicle charging station, According to the present invention, charge power of an electric vehicle charging station, which is an electric vehicle charging infrastructure, is incorporated as a demand reaction resource, and the electric power demand of an electric vehicle charging station is effectively managed, thereby contributing to a national energy demand management policy .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power demand management method for an electric vehicle charging station,

The present invention relates to a power demand management method for an electric vehicle charging station and a power demand management system for an electric vehicle charging station for providing the same. More particularly, the present invention relates to an electric power demand management system for an electric vehicle charging station, A method for managing the electric power demand of the electric vehicle charging station by providing a real time variable charging charge rate according to the real time charging electric power consumption amount to the users using the electric vehicle charging station to induce the regulation of the charging electric power consumption amount of the electric vehicle charging station To a power demand management system for an electric vehicle charging station.

The Smart Grid is a smart grid that integrates IT technology into the existing unidirectional power grid that has been in the stage of power generation, transmission, distribution, and sales, to optimize energy efficiency by exchanging information in real- Intelligent power grid '. The basic concept is that the entire power system operates efficiently as a whole through information sharing between power plants, transmission facilities, distribution facilities and power users, and information sharing in both directions.

In order to more efficiently utilize limited energy resources by sharing energy and information between energy suppliers and energy users in a bidirectional manner, countries around the world are spurring on the establishment of smart grid, and active smart grid bi-directional power management Existing simple supply-oriented energy policies are being transformed into energy demand management policies.

Stabilization of supply and demand is the most important issue in terms of energy demand management. The concept of demand response is introduced to reduce energy loss more efficiently by using energy more efficiently.

Figure 1 shows a conceptual diagram of the demand response. Demand Response (DR) means that an energy consumer changes energy usage levels from his or her normal consumption pattern in response to various incentives. In order to induce such a demand reaction, various policies have been proposed, such as incentives for reducing energy consumption, or adding electricity tariffs differentially over time.

In particular, the demand response (DR) is applied as a reliability DR corresponding to the expansion of power generation capacity on the supply side in order to secure system reliability by transferring or suppressing the peak load in the emergency of energy supply and demand. By reducing demand for very expensive time zones, it is being applied as a cost-effective DR to replace generators with relatively high fuel costs and to reduce overall energy production costs.

[Table 1] shows an example of a load management program through the demand reaction market. As shown in Table 1 below, a demand reaction market is established, a demand reaction event is disclosed in the demand reaction market, Various programs are being implemented to bid for demand response events with energy savings through management.

[Table 1]

In order to further stimulate the demand reaction market and further increase the overall energy use efficiency, it is necessary to find out demand reaction resources. Electric vehicles, which are currently being supplied at a rapid pace, require charging to operate the electric vehicles. As the logarithm increases, the charging power of the entire electric car is expected to occupy a large part in terms of load management. Thus, it is necessary to effectively manage the load of the electric car to charge the load and to reflect it as a demand response resource.

In particular, for the operation of electric vehicles, it is essential to install electric vehicle charging stations dispersed throughout the city as charging infrastructure for electric vehicles. In response to the proliferation of electric vehicles, electric car charging stations are expected to spread rapidly. It will be a part of usage. As a result, electric power demand management at electric car charging stations will be a very important issue in terms of power supply management.

It is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to incorporate charging electric power of an electric vehicle charging station for charging an electric car, I would like to suggest ways to do this.

Particularly, it tries to solve the problem that electric power supply and demand unstable in the energy demand management policy may occur due to the rapid increase of the charging electric power of the electric car due to the spread of electric cars.

Furthermore, as a charging infrastructure for electric vehicles, participating in the demand reaction market with the charging power of the electric car charging station, and giving discounts on the charging charge with the proceeds from the demand reaction event, inducing the users of the electric car charging station to participate, I would like to suggest ways to do this.

According to another aspect of the present invention, there is provided a method for managing electric power demand of an electric vehicle charging station, the method comprising: setting a target electric power consumption amount of an electric vehicle charging station according to a demand reaction event; A charge power usage determination step of determining whether to adjust a charge power usage amount by comparing the real time charge power usage amount of the electric vehicle charging station with the target electric power usage amount; A charge level setting step of setting a plurality of charge levels in which the charge time and the charge amount per unit time are different for the electric vehicle and calculating a charge unit price for each charge level based on the profit through the demand response event; And a charging information providing step of providing the user with the charging unit price of the charging level to induce the adjustment of the charging power consumption of the electric vehicle charging station.

Preferably, the target power usage setting step may include collecting power usage information of the electric vehicle charging station for a predetermined period of time; A reference power demand amount calculating step of calculating a reference power demand amount based on power usage information of the electric vehicle charging station; And a demand reaction target power usage amount setting step of setting a target power consumption amount for the demand reaction event based on the reference power demand amount.

Further, the demand reaction target power usage setting step may include: receiving the demand response event information according to the demand reaction market opening; Calculating a reduction target amount based on the reference power demand; And bidding the demand response market with the reduction target amount in response to the acceptance reaction event information; And setting the target power usage amount based on the reference power demand amount and the reduction target amount.

Preferably, the charging power consumption determining step includes: a charging power consumption measuring step of measuring a real-time charging power consumption of the electric vehicle charging station; A target power proximity degree calculating step of calculating a target power proximity degree by comparing the real-time charging power usage amount and the target power usage amount; And a charge power usage adjustment determination step of determining whether to adjust the charge power usage amount of the electric vehicle charging station based on the target power proximity.

More preferably, the target power proximity calculating step may include calculating an excess power consumption amount by comparing the accumulated amount of the real-time charging electric power consumption with the target electric power consumption amount; Calculating a necessary charge amount to be supplied to the electric car during charging and the electric car during charging at a predetermined time; And calculating the target power proximity by comparing the used amount of spare power with the required charged amount.

The charging level setting step may include a charging level classifying step of setting a plurality of charging levels in which the charging time and the charging amount per unit time are differentiated based on the target power proximity degree; Calculating a discount grant amount to calculate a discount grant amount from the profit based on the target power proximity; A discount charging amount calculating step of calculating a plurality of differentiated discount charging amounts corresponding to each of the plurality of charge levels by differentially classifying the discount grant amount so as to correspond to the plurality of charge levels; And calculating a charging unit price for each of the plurality of charge levels by reflecting the plurality of discount charge amounts.

Further, the charging level classifying step may further include a limiting charging level setting step of setting the charging power level of the plurality of charging levels among the plurality of charging levels to a limited charging level for limiting the selection, .

Preferably, the step of calculating the discount amount includes calculating a discount amount of money from the proceeds in proportion to the target power proximity degree, and the step of calculating the discount charge amount includes calculating It is possible to calculate the discounted charge amount for each of the plurality of charge levels by classifying the discounted amount as a differential amount so as to be in inverse proportion to the charge amount per unit time.

Here, the charging information providing step may provide information including the charging unit price information for the plurality of charging levels to the charging terminal installed in the user terminal or the charging station of the electric vehicle.

Further, the charging information providing step may further include providing the user of the currently charged electric car with information on the current charging level and the charging level having a lower charging unit price in comparison with the charging unit price of the current charging level And a charging level changing step of changing the current charging level of the charging electric car to the charging level selected by the user to charge the charging electric car.

One embodiment of the electric power demand management system of an electric vehicle charging station according to the present invention includes demand response event management means for receiving demand response event information and setting a target electric power consumption amount of an electric vehicle charging station according to the demand reaction event; Power consumption amount management means for monitoring the real-time charging power consumption amount of the electric vehicle charging station to determine whether to adjust the charging electric energy consumption amount of the electric vehicle charging station, and generating a control signal of the charging device according to the charging level; Charge level setting means for calculating a plurality of charge levels in which a charge time and a charge supply amount per unit time are differentiated and a charge unit price corresponding to each of the plurality of charge levels; And charging information providing means for providing charging level information to the user of the electric vehicle charging station.

Preferably, the demand reaction event management means comprises: a DR message receiving unit for receiving information on the demand reaction event; A power consumption collecting unit for collecting charging power usage information of the electric vehicle charging station; And a target power usage amount setting unit for setting a target power usage amount of the electric vehicle charging station for the demand reaction event.

The power consumption monitoring unit monitors a real time charging power consumption of the electric vehicle charging station and predicts a charging electric power demand for a predetermined period to determine whether to adjust the charging electric energy consumption of the electric vehicle charging station. And a charge output controller for generating a control signal of the charger according to the plurality of charge levels.

Further, the charge level setting unit may include a charge level setting unit for setting a plurality of charge levels in which the charge time and the charge amount per unit time are differentiated; And a charge unit price calculation unit for calculating a charge unit price corresponding to each of the plurality of charge levels.

Preferably, the charging information providing means includes charging information providing means for providing information on the plurality of charging levels through wired or wireless communication with a user's wireless terminal or charger of the electric vehicle charging station; And a charge level changing unit for receiving information on a selected charge level from the wireless terminal of the user and transmitting the information to the power usage amount managing unit.

According to the present invention, charge power of an electric vehicle charging station, which is an infrastructure for charging an electric vehicle, is incorporated as a demand reaction resource, and the electric power demand of an electric vehicle charging station is effectively managed, thereby contributing to a national energy demand management policy.

Furthermore, the present invention proposes a variable charge system in which a variety of charge levels and discounts are given according to the real-time charging electric power consumption of the electric vehicle charging station, and gives the user of the electric vehicle charging station the option of selecting a desired charging level, It is possible to effectively increase the convenience and to induce the control of the charged electric power consumption of the electric vehicle charging station.

Particularly, an additional profit is generated from the operator of the electric car charging station through the profit earned by participating in the demand reaction event by charging electric power of the electric car charging station, and the electric car charging station can charge the electric car at a lower charge rate .

1 shows a conceptual diagram of a demand reaction,
2 is a schematic block diagram of a power demand management system to which a power demand management system of an electric vehicle charging station according to the present invention is applied,
3 is a block diagram of an embodiment in which the electric power demand management system of an electric vehicle charging station according to the present invention manages electric power demand of a plurality of electric vehicle charging stations,
4 is a configuration diagram of an embodiment of a power demand management system for an electric vehicle charging station according to the present invention,
FIG. 5 is a detailed block diagram of an embodiment according to the present invention shown in FIG. 4,
6 is a flowchart of an embodiment of a method for managing electric power demand of an electric vehicle charging station according to the present invention,
FIG. 7 is a flowchart illustrating a process of setting a target amount of power used in a method of managing electric power demand of an electric vehicle charging station according to the present invention.
FIG. 8 is a flowchart illustrating a process of setting a charge level for regulating charge power usage in a method of managing electric power demand of an electric vehicle charging station according to the present invention,
9 is a flowchart illustrating a process of calculating a target power proximity in a method of managing electric power demand of an electric vehicle charging station according to the present invention,
10 is a flowchart illustrating an embodiment of charging an electric car at an electric vehicle charging station by applying the electric power demand management method of an electric vehicle charging station according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

First, the terminology used in the present application is used only to describe a specific embodiment, and is not intended to limit the present invention, and the singular expressions may include plural expressions unless the context clearly indicates otherwise. Also, in this application, the terms "comprise", "having", and the like are intended to specify that there are stated features, integers, steps, operations, elements, parts or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The present invention relates to a system and method for real-time fluctuation in real-time fluctuation of a demand-response event by participating in a demand reaction event by incorporating charging electric power of an electric vehicle charging station as an electric vehicle charging infrastructure into a demand reaction event, A power demand management system for an electric vehicle charging station and a method for managing the electric power demand of an electric vehicle charging station using the electric power demand management system are disclosed as a method for inducing a user to charge an electric vehicle within a range of a target electric power consumption amount of the electric vehicle charging station by applying a charging system.

First, a power demand management system of an electric vehicle charging station according to the present invention will be described, and then a power demand management method of an electric vehicle charging station according to the present invention will be described.

2 is a schematic diagram of a power demand management system to which a power demand management system for an electric vehicle charging station according to the present invention is applied.

The electric power demand management system 100 of the electric vehicle charging station according to the present invention can participate in the demand reaction event with the charging electric power of the electric vehicle charging station according to the demand reaction market opening of the demand management market operating system 10 operating the demand reaction market , The charging level is set according to the real-time charging power consumption amount of the charging devices 210a, 210b, 210c, ..., 10n to manage the target electric power consumption amount of the corresponding electric vehicle charging station to provide the charging level information to the user of the electric vehicle 50 .

Particularly, the electric power demand management system 100 of the electric vehicle charging station sets a target electric power consumption amount to control the participation of the electric vehicle charging station in a demand reaction event and sets a certain portion of the profit according to the demand response event participated to achieve the set target electric power consumption The electric charge charging station is provided with charging discount amount for inducing control of the charging electric power charging amount, thereby guiding the users who use the electric vehicle charging station to participate and managing the target electric power consumption amount.

Here, the electric vehicle charging station may be a single operator who installs a plurality of chargers 210a, 210b, 210c, ..., 10n in a certain area and performs a charging business. However, 210n, 210c, ..., 10n distributed in a road or building or the like may be grouped.

Further, the electric power demand management system 100 of the electric vehicle charging station may be constructed as a system that is disposed in the electric vehicle charging station and manages the electric power demand of only the electric vehicle charging station, but more preferably, And can monitor the electric power demand of the electric vehicle charging station through the wired / wireless communication network and change the charge level according to the monitored electric power demand.

In addition, the electric power demand management system 100 of an electric vehicle charging station according to the present invention further includes a plurality of electric vehicle charging stations as members, and can manage electric power demand with respect to a registered electric vehicle charging station. FIG. And a power demand management system of a charging station manages power demand of a plurality of electric vehicle charging stations.

3, the electric power demand management system 100 of an electric vehicle charging station registers a plurality of electric vehicle charging stations 200a, 200b, 200c, and 200d as members and stores them in the electric vehicle charging stations 200a, 200b, 200c, 200a, 200b, 200c, and 200d, respectively, and controls the electric power demand of the electric vehicle charging station that manages the target electric power consumption of each of the electric vehicle charging stations 200a, 200b, 200c, and 200d Or a system that provides services to the user. Further, the electric power demand management system 100 of the electric vehicle charging station incorporates a plurality of registered electric vehicle charging stations 200a, 200b, 200c, and 200d to participate in a demand reaction event as a whole electric vehicle charging station, The electric power demand can be managed by setting a charge level applied to the entire electric vehicle charging station.

FIG. 4 is a configuration diagram of an embodiment of a power demand management system for an electric vehicle charging station according to the present invention, and FIG. 5 shows a detailed configuration diagram of an embodiment according to the present invention shown in FIG.

The electric power demand management system 100 of an electric vehicle charging station according to the present invention roughly includes a demand response event management unit 110, a power consumption management unit 130, a charge level setting unit 150, and a charge information providing unit 170 .

The demand reaction event management means 110 receives the demand reaction event information from the demand management market operating system 10 and controls the participation of the demand reaction event with respect to the charging power of the corresponding electric vehicle charging station, Referring to the detailed configuration of the demand reaction event management unit 110 shown in FIG. 5A, the DR message reception unit 111 receives the DRM message from the demand management market operating system 10 ) To obtain demand response market information and to participate in demand reaction events. The power consumption collecting unit 113 collects charging power usage information such as a charging power usage amount or a real time charging power consumption amount for a certain period of time at an electric vehicle charging station, Based on the collected charge power usage information, the charging electric power usage pattern of the electric vehicle charging station is analyzed to calculate the reference electric power demand amount for a predetermined period. Based on the calculation, the reduction electric power consumption amount to participate in the demand response event is calculated, The target power consumption amount is set according to the target power consumption amount.

As a means for interlocking with the electric vehicle charging station, the electric power consumption managing unit 130 monitors the real-time charging electric power consumption of the electric vehicle charging station to determine whether adjustment of the charging electric power consumption is necessary. Referring to the detailed configuration of the power consumption management means 130 shown in FIG. 5B, the charging power monitoring unit 131 monitors the real-time charging power consumption of the electric vehicle charging station, Based on the measured value of the digital watt-hour meter installed in the main body. The charging power monitoring unit 131 predicts the charging power demand for a predetermined period based on the charging amount input by the charging electric car and the waiting electric vehicle for each charging station of the electric vehicle charging station, It is determined whether adjustment of the charging power consumption is necessary. The charging output control unit 133 generates a control signal for each charging level for controlling the charger in accordance with the charging time of each of the plurality of charging levels varying according to the real time charging power usage amount and the charging amount of supply per unit time.

The charge level setting means 150 sets a plurality of charge levels different from each other when the power consumption of the electric vehicle charging station is required, and calculates the charge unit price for each charge level. Referring to the detailed configuration shown in FIG. 5C with respect to the charging level setting unit 150, the charging level setting unit 151 sets a plurality of charging levels in which the charging time and charging amount per unit time are different Here, the plurality of charge levels may be set so that the charge level is higher and the charge level per unit time is higher as the charge level is sequentially higher. Preferably, the interval between the charge levels and the charge level are set based on the real- Lt; / RTI > The charging unit price calculating unit 153 calculates the charging unit price for each of the plurality of charging levels set by the charging level setting unit 151, and the unit price of the charging unit may be set to be higher at a higher level.

The charging information providing means 170 provides the charging level information to the user in order to induce the adjustment of the charging electric power consumption amount of the electric vehicle charging station. The detailed configuration of the charging information providing means 170 shown in FIG. 5 (d) The charging information providing unit 171 provides charging level information such as a charging time, a charging amount per unit time, a charging unit price, etc. for each charging level to the charging terminal of the user at the charging station screen of the charging station do. Further, the charging information providing unit 170 may include a charging level changing unit 173. The charging level changing unit 173 may change the charging level of the user currently charging according to the charging level information provided through the charging information providing unit 171 And transmits a signal to the power consumption amount management means 130 to change the charging level of the electric car of the currently charging user by receiving information on the selected charging level when selecting another charging level to change the charging level of the user .

In the present invention, a method of managing electric power demand using the electric power demand management system of an electric vehicle charging station is presented. Hereinafter, a method of managing electric power demand of an electric vehicle charging station according to the present invention will be described with reference to embodiments.

6 shows a flowchart of an embodiment of a method for managing electric power demand of an electric vehicle charging station according to the present invention.

The electric power demand management system 100 of the electric vehicle charging station according to the present invention receives notification of the demand reaction event from the demand management market operating system 10 and participates in the demand reaction event with the charging electric power of the electric vehicle charging station S100, FIG. 7 is a flowchart illustrating a process of setting a target amount of power used in the electric power demand management method of an electric vehicle charging station according to the present invention, according to an embodiment of the present invention. And a process of setting a target amount of power consumption according to participation of a demand reaction event will be described with reference to FIG.

The electric power demand management system 100 of the electric vehicle charging station collects the charging electric power usage information of the electric vehicle charging station (S110) and holds the information. When the information of the demand electric power event is received (S120) The reference electric power demand amount is calculated on the basis of the charge electric power usage information of the electric vehicle charging station collected in correspondence with the electric power demand management period set to the electric power demand management period. Here, the calculation of the reference power demand can be performed using a customer reference load (CBL) calculation method. Then, a reduction target amount is calculated on the basis of the reference power demand amount (S140), and then the bid amount is inputted to the demand response market with the reduction target amount information (S150). The bid to the demand response market may mean the application for participating in the demand response event have.

The target amount of power consumption is set according to the participation of the demand reaction event (S160). For example, the target power consumption amount may be a value obtained by subtracting the reduction target amount from the reference power demand amount.

If the target electric power consumption for the electric car charging station is set through the above process, the electric power demand of the electric car charging station is managed on the basis of the target electric power consumption amount. Referring back to FIG. 6, .

The real-time power consumption is monitored for the electric vehicle charging station participating in the demand reaction event (S200). In order to achieve the target electric power consumption amount, it is determined whether adjustment of the charging electric power consumption amount is necessary based on the real-time electric power consumption amount If it is not necessary to adjust the charging power usage amount of the electric vehicle charging station, the existing charging charge unit is maintained and applied (S500). If the real-time power consumption of the electric vehicle charging station is increased to control the amount of charge electric power used, a plurality of charge levels differentiated by the charge time and the unit charge per unit time are set (S300) (S350). ≪ / RTI >

FIG. 8 is a flow chart illustrating an embodiment of a process for setting a charge level for regulating charge power usage in the electric power demand management method of an electric vehicle charging station according to the present invention. Referring to FIG. 8, Let's take a closer look at the process of setting the charge level for the battery.

The real-time power consumption of the electric vehicle charging station is measured (S210), and the target power proximity is calculated by comparing the power usage trend according to the real-time power consumption and the target power consumption (S230). Here, the target power proximity is a value for determining whether the target electric power consumption amount according to the event participation is achieved or not, and it is determined whether the charge electric power consumption amount of the electric vehicle charging station is adjusted according to the degree of the target electric power proximity. It is determined whether the target electric power proximity exceeds the preset reference value range (S260), and it is determined whether the electric power charging amount of the electric vehicle charging station is adjusted based on the determination.

In order to further examine the process of calculating the target power proximity, the method of calculating the target power proximity in the electric power demand management method of an electric vehicle charging station according to the present invention will be described with reference to FIG. 9 showing a flowchart of an embodiment .

(S233) the electric power consumption amount of the electric vehicle charging station and the target electric power consumption amount (S231) in order to calculate the extra electric power consumption amount (S233). Preferably, the electric vehicle charging station uses the electric power demand management period The extra power consumption amount is calculated by the difference between the accumulation amount of the real-time power consumption of the charging station and the target power consumption amount.

As a method for calculating one target power usage amount, the target power proximity may be calculated by comparing the target power usage amount and the excess power usage amount. For example, as shown in the following Equation 1, the excess power usage amount and the target power usage amount The target power proximity may be calculated as a ratio of the target power.

[식 1]

[Formula 1]

In the case of applying Equation 1, the comparison of the target power approximation and the reference value (S260) in FIG. 8 determines whether the target power proximity falls below the reference value range.

More preferably, the target power proximity may be calculated in a different manner from the method of Equation (1). During the period from the present time to the end of the set demand management period of the demand reaction event in which the electric vehicle charging station participates, (S235) the amount of charge to be supplied to the electric car charged in the charging station of the electric vehicle and the electric car waiting to be charged (S235), wherein the charged amount is inputted through the charger or the wireless terminal It can be calculated on the basis of one charge information.

Then, the target power proximity may be calculated (S239) as a result of comparison between the redundant power usage amount and the required power amount (S237). If the ratio of the required power amount to the redundant power amount The target power proximity may be calculated.

[식 2]

[Formula 2]

Since the target power proximity calculated according to Equation 2 becomes larger, the target electric power consumption can not be achieved. Therefore, when the target electric power proximity exceeds the reference value, the charging electric power of the electric vehicle charging station It can be judged that the usage amount needs to be adjusted.

In addition, the target power proximity can be calculated by comparing the real-time power consumption and the target power consumption with various appropriate methods to obtain the target power consumption.

8, a description will be given of a case in which it is difficult to achieve the target amount of power consumption as the numerical value of the target power level becomes higher in the same manner as in Equation 2 . If the target power level is lower as the numerical value of the target power level is lowered in the same manner as in the above-mentioned [Equation 1], it becomes difficult to achieve the target power consumption amount.

If it is determined that the charge power consumption of the electric vehicle charging station needs to be adjusted according to the determination of the target electric power proximity, a plurality of charge levels are set (S320) by classifying the charge time and charge supply amount to be different from each other (S310). If it is determined that the range of the target power consumption amount is difficult to achieve based on the target power proximity, it is possible to set the charging level such as rapid charging that the charging supply amount among the plurality of charging levels is equal to or more than a predetermined value to the limited charging level so as to restrict the selection. For example, if the target electric power proximity is close to 80% and the target electric power consumption amount is imminent, the charging level of the electric car charging station may be forcibly limited.

When the plurality of charge levels are set (S320), the charge unit price for each charge level is calculated. First, based on the target electric power proximity, (S360) as the discounted amount to induce the adjustment of the charging power. Here, the higher the proximity of the target power is, the more aggressively the regulation of the charging power must be induced, so that the granting of the discount benefit must be further increased. Therefore, the discount grant amount may be calculated in proportion to the target power proximity.

If the discounted amount is calculated, the discounted amount is classified into the plurality of charge levels corresponding to the plurality of charge levels, and a plurality of discounted charge amounts corresponding to the plurality of charge levels are calculated (S360). For example, It can be classified into a differential amount for each charge level so as to be proportional to the charge time of the charge level and inversely proportional to the charge amount per unit time. In addition, an additional discount may be granted when charging is not performed for a predetermined period of time. If the real-time power consumption of the electric vehicle charging station is rapidly increased to reach a peak value, it may be necessary to cut off the charging power during the peak time , And additional discounts are given to encourage users to participate.

If the discounted charge amount for each of the plurality of charge levels is calculated, the charging unit price for each charge level for inducing the charge power adjustment is calculated by reflecting the discounted charge amount for each of the plurality of charge levels at the unit price of each charge level (S380).

Referring to Table 2 below as an example of the charging unit price for a plurality of charge levels, it is necessary to adjust the charge level for maintaining the existing charge condition and the charge power of the electric vehicle charging station when the charging electric power of the electric vehicle charging station is not required to be adjusted A plurality of charge levels to be set are different from each other in terms of the charge condition and the corresponding charge unit price, so that users can be encouraged to participate in charging at a lower cost.

[Table 2]

Furthermore, when the real-time electric power consumption of the electric vehicle charging station is rapidly increased, additional discounts are provided according to the waiting time for charging electric power control, thereby guiding the users to participate and managing the electric power demand of the electric vehicle charging station effectively.

When the condition of the charge level for inducing the adjustment of the charge power usage amount of the electric vehicle charging station is set through the process according to the present invention, the charge information about the set charge level is returned to the embodiment of FIG. S400), charging and charging are performed under the condition of the selected charging level according to the charging level selection of the user.

The above process is repeated until the period set as the demand reaction event ends (S450).

According to the electric power demand management system of the electric vehicle charging station according to the present invention and the electric power demand management method of the electric vehicle charging station using the electric power demand management system according to the present invention, it is possible to incorporate the charging electric power of the electric vehicle charging station, This will contribute to national energy demand management policies.

Particularly, an additional profit is generated from the operator of the electric car charging station through the profit earned by participating in the demand reaction event by charging electric power of the electric car charging station, and the electric car charging station can charge the electric car at a lower charge rate .

FIG. 10 is a flowchart illustrating an embodiment of charging an electric vehicle at an electric vehicle charging station by applying the electric power demand management method of an electric vehicle charging station according to the present invention, as an embodiment in which the electric power demand management system and method of an electric vehicle charging station according to the present invention are practically applied. Lt; / RTI >

When the charged vehicle is loaded into the electric vehicle charging station provided with the electric power demand management through the electric power demand management system 100 of the electric vehicle charging station according to the present invention (S610), charging information is provided to the charged vehicle (S620) . Here, the charging information may be information on the existing charging condition when the charging electric power consumption amount of the electric vehicle charging station is not executed, and may be information on the existing charging condition. If the charging electric power consumption amount of the electric vehicle charging station is being adjusted, The charging information for the charging level of the battery is provided.

When the user selects the charge level based on the provided charge information (S630), charging is performed to the charged vehicle at the selected charge level (S700).

If the charging information is changed due to the change of the charging level according to the execution of the adjustment of the charging electric power consumption amount of the electric vehicle charging station during charging of the charging vehicle (S710), the charging information for the changed charging level is provided to the user (S720) If the user changes the charge level (S730) based on this, the charge output and the charge unit price are changed and charged according to the changed charge level condition (S700). If the user does not wish to change the charging level (S730), the charging is continued according to the condition of the previously selected charging level (S700).

In this way, a variable charge system in which various charge levels and discounts are given according to the real-time charging electric power consumption of the electric vehicle charging station is provided to give the user of the electric vehicle charging station the option of selecting a desired charging level, It is possible to effectively control the charge power consumption of the electric vehicle charging station.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10: Demand management market operating system, 50: Electric car,
100: electric car charging station electric power demand management system,
110: demand reaction event management means, 111: DR message receiving unit,
113: power consumption collecting unit, 115: target power consumption setting unit,
130: power consumption management means, 131: charge power monitoring unit,
133: charge output control section,
150: charge level setting means, 151: charge level setting section,
153: Charge Unit Price Acquisition Government,
170: charge information providing means, 171: charge information providing means,
173: Charging level changing section,
200a, 200b, 200c, 200d: electric vehicle charging station,
210a, 210b, 210c, ... 210n: charger,
250: Digital watt hour meter, 300: Power supply company.

Claims (15)

A target power usage setting step of setting a target power usage amount of an electric vehicle charging station according to a demand reaction event participation;
A charge power usage determination step of determining whether to adjust a charge power usage amount by comparing the real time charge power usage amount of the electric vehicle charging station with the target electric power usage amount;
A charge level setting step of setting a plurality of charge levels in which the charge time and the charge amount per unit time are different for the electric vehicle and calculating a charge unit price for each charge level based on the profit through the demand response event; And
And a charging information providing step of providing the user with the charging unit price of the charging level to induce the adjustment of the charging electric power consumption amount of the electric vehicle charging station. The method according to claim 1,
The target power usage setting step may include:
Collecting power usage information of the electric vehicle charging station during a predetermined period of time;
A reference power demand amount calculating step of calculating a reference power demand amount based on power usage information of the electric vehicle charging station; And
And a demand reaction target power usage setting step of setting a target electric power consumption amount for the demand reaction event based on the reference electric power demand amount. 3. The method of claim 2,
The demand reaction target power usage setting step may include:
Receiving the demand response event information according to a demand reaction market opening;
Calculating a reduction target amount based on the reference power demand; And
Bidding the demand response market with the reduction target amount in response to the acceptance reaction event information; And
And setting the target power usage amount based on the reference power demand amount and the reduction target amount. The method according to claim 1,
The charging power consumption determination step may include:
A charging power usage measuring step of measuring a real time charging electric power consumption of the electric vehicle charging station;
A target power proximity degree calculating step of calculating a target power proximity degree by comparing the real-time charging power usage amount and the target power usage amount; And
And determining whether to adjust the charge power usage amount of the electric vehicle charging station based on the target power proximity degree. 5. The method of claim 4,
The target power proximity calculating step may include:
Calculating an extra power consumption amount by comparing the accumulation amount of the real-time charging electric power consumption with the target electric power consumption amount;
Calculating a necessary charge amount to be supplied to the electric car during charging and the electric car during charging at a predetermined time; And
And calculating the target power proximity by comparing the amount of spare power used and the required charge amount. 5. The method of claim 4,
The charging level setting step includes:
A charge level classification step of setting a plurality of charge levels in which the charge time and the charge amount per unit time are differentiated based on the target power proximity;
Calculating a discount grant amount to calculate a discount grant amount from the profit based on the target power proximity;
A discount charging amount calculating step of calculating a plurality of differentiated discount charging amounts corresponding to each of the plurality of charge levels by differentially classifying the discount grant amount so as to correspond to the plurality of charge levels; And
And calculating a charge unit price for each of the plurality of charge levels by reflecting the plurality of discount charge amounts. The method according to claim 6,
The charging level classifying step includes:
Further comprising a limited charge level setting step of setting the charge level at which the charge supply amount among the plurality of charge levels is equal to or more than a predetermined value as the limited charge level for limiting the selection in comparison with the target power proximity and the reference value, Of power demand management. The method according to claim 6,
The discount grant amount calculation step may include:
The discount grant amount is calculated from the profit in proportion to the target power proximity,
The discount charging amount calculating step may include:
Wherein the charging amount calculation unit calculates the discount charging amount for each of the plurality of charging levels by classifying the discounted amount as a differential amount so that the charging amount is proportional to the charging time and inversely proportional to the charging amount per unit time for each of the plurality of charging levels Power demand management method. The method according to claim 1,
The charging information providing step may include:
And providing information including charge unit price information for the plurality of charge levels to the user's terminal or a charger installed in the electric vehicle charge station. 10. The method of claim 9,
The charging information providing step may include:
Providing a user of a currently charged electric car with information on a current charge level and a charge level having a lower charge price compared to the charge rate of the current charge level,
Further comprising a charge level changing step of changing the current charge level of the charging electric car to a charge level selected by the user to charge the electric car being charged. Demand response event management means for receiving demand response event information and setting a target amount of power consumption of an electric vehicle charging station according to the demand response event;
Power consumption amount management means for monitoring the real-time charging power consumption amount of the electric vehicle charging station to determine whether to adjust the charging electric energy consumption amount of the electric vehicle charging station, and generating a control signal of the charging device according to the charging level;
Charge level setting means for calculating a plurality of charge levels in which a charge time and a charge supply amount per unit time are differentiated and a charge unit price corresponding to each of the plurality of charge levels; And
And charging information providing means for providing charge level information to a user of said electric vehicle charging station. 12. The method of claim 11,
Wherein the demand reaction event management means comprises:
A DR message receiver for receiving information on the demand reaction event;
A power consumption collecting unit for collecting charging power usage information of the electric vehicle charging station; And
And a target power usage amount setting unit for setting a target power usage amount of the electric vehicle charging station for the demand reaction event. 12. The method of claim 11,
Wherein the power usage management means comprises:
A charge power monitoring unit monitoring the real-time charging power consumption of the electric vehicle charging station and determining whether the charge electric power consumption of the electric vehicle charging station is adjusted by predicting the charging electric power demand for a predetermined period; And
And a charge output control unit for generating a control signal of the charger according to the plurality of charge levels. 12. The method of claim 11,
Wherein the charge level setting means comprises:
A charge level setting unit for setting a plurality of charge levels in which the charge time and the charge amount per unit time are differentiated; And
And a charge unit price calculation unit for calculating a charge unit price corresponding to each of the plurality of charge levels. 12. The method of claim 11,
Wherein the charging information providing means comprises:
A charge information providing unit for providing information on the plurality of charge levels through wired / wireless communication with a user's wireless terminal or a charger of the electric vehicle charging station; And
And a charge level changing unit for receiving information on a selected charge level from the wireless terminal of the user and transmitting the information to the power usage managing unit.

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